Numerical simulation of tapping process in converter steelmaking
PANG Chuan-bin1, YUAN Fei1,2, XU An-jun1, HE Dong-feng1, LIU Xuan1
1. School of Metallurgical and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, Beijing 100083, China
Abstract：Different diameters of the tapping hole determine the distribution of tapping flow field, which affects the steel temperature drop during the tapping process, and the steel temperature drop directly affects the converter tapping temperature and the rhythm of steelmaking production. In order to master the law of temperature drop in the process of tapping and design reasonable parameters of tapping hole, Ansys software package was used to establish 3D converter and ladle model. With the help of numerical simulation method, the data of tapping flow field for 200 t converter under different sizes of tapping hole was studied. Taking liquid steel injection flow during the tapping process as the research object, the influence of tapping hole size and inner wall temperature of ladle on the temperature drop of injection flow was studied. It is found that the temperature drop of liquid steel injection flow is proportional to the specific surface area of injection flow. In addition, at the early stage of steel tapping, the temperature drop of injection flow decreases by 0.4-0.7 K on average when the inner wall temperature increases by 100 K. The research on the influence of ladle and alloy auxiliary materials on the temperature drop in the process of steel tapping will be carried out in the future, which is expected to provide data support for steel tapping process of converter.
庞传彬, 袁飞, 徐安军, 贺东风, 刘旋. 转炉炼钢出钢过程的数值模拟[J]. 中国冶金, 2022, 32(9): 8-15.
PANG Chuan-bin, YUAN Fei, XU An-jun, HE Dong-feng, LIU Xuan. Numerical simulation of tapping process in converter steelmaking[J]. China Metallurgy, 2022, 32(9): 8-15.
FAN Zhi-yong,XIONG Wei,HUANG Yi-fei. Study on temperature drop of molten steel during converter tapping[C]//Proceedings of the 2015 4th International Conference on Sustainable Energy and Environmental Engineering. [S.l.]:Atlantis Press,2016:538.
André Zimmer,lvaro Niedersberg Correia Lima,Rafael Mello Trommer,et al. Heat transfer in steelmaking ladle[J]. Journal of Iron and Steel Research International,2008,15(3):11.
[14]
Sho Sonoda,Noboru Murata,Hideitsu Hino,et al. A statistical model for predicting the liquid steel temperature in ladle and tundish by bootstrap filter[J]. ISIJ International,2012,52(6):1086.
2022, Vol. 32 
